Ding Ding Ding!!! Daddy wins a cupie doll!!! PH to low will cause lockout just as Daddy says. If PH is wrong it will cause many problems and make you run around in circles trying to figure out wtf went wrong. Correct the base problem and then go from there. Daddy says 5.6-5.8 and I run my 3 at 5.7-6.0. Happy growing :jointsmile: